Positive acceleration = speeding up; speed increasing in the direction you're moving.
Negative acceleration = slowing down; speed decreasing in the direction you're moving,
or speed increasing in the opposite direction.
Positive acceleration = speeding up. Negative acceleration = slowing down.
Actually, it depends on how you define the coordinate axes, but usually when moving forward, negative acceleration decreasesspeed, positive acceleration increasesit.
In this case, acceleration is positive. Negative acceleration would cause the object to slow down (decelerate.)
Retardation or deceleration is negative acceleration. It is opposite to the direction of velocity.
If you define the "up" direction as "positive", then the acceleration is negative, because it is downward. If you define "down" as positive, then acceleration is negative. You can use any convention; just be sure to be consistent within a particular calculation, to avoid errors.
Yes, acceleration can be positive and negative because acceleration is a vector. It has both direction and magnitude. The direction is what makes it positive or negative. Negative acceleration is usually called deceleration.
Positive acceleration = speeding up. Negative acceleration = slowing down.
Positive is speeding up and negative is slowing down
Positive acceleration = speeding up. Negative acceleration = slowing down.
positive
Positive acceleration ==> speeding up Negative acceleration ==> slowing down
Actually, it depends on how you define the coordinate axes, but usually when moving forward, negative acceleration decreasesspeed, positive acceleration increasesit.
In this case, acceleration is positive. Negative acceleration would cause the object to slow down (decelerate.)
Retardation or deceleration is negative acceleration. It is opposite to the direction of velocity.
If you define the "up" direction as "positive", then the acceleration is negative, because it is downward. If you define "down" as positive, then acceleration is negative. You can use any convention; just be sure to be consistent within a particular calculation, to avoid errors.
positive acceleration is when things speed up; negative acceleration is when things slow down; and zero acceleration is when things do not speed up or slow down, this is called constant speed, or no change in velocity.
de acceleration just means slowing down. Acceleration means speeding up. Actually any change in speed is considered to be acceleration. Slowing down is called negative acceleration or (de-acceration) and speeding up is called positive excelleration.